Why in news?
Scientists at the Rotary Bangalore TTK Blood Centre identified a previously unknown human blood group, now named CRIB (Cromer India Bengaluru). The discovery, confirmed by the International Blood Group Reference Laboratory in the UK, is a rare honour for Indian transfusion science.
How was it discovered?
A 38‑year‑old woman from Karnataka required heart surgery, but her blood sample reacted with all available donor samples. Even members of her extended family were incompatible. Researchers sent the sample to the international reference laboratory, where molecular analysis over ten months revealed a new antigen in the Cromer blood group system.
What is CRIB?
- CRIB stands for Cromer India Bengaluru, recognising the blood centre that discovered it.
- It represents a new antigen within the rare Cromer blood group system, whose antigens are located on the Decay‑Accelerating Factor (DAF) protein of red blood cells.
- The antigen had never been observed in any human sample before, making the discovery globally unique.
Significance
- Advances in transfusion medicine: Identifying new blood groups helps clinicians better match donors and recipients, reducing the risk of transfusion reactions.
- Importance of rare donor registries: The case underscores the need for databases of rare blood types and international cooperation to source compatible units.
- Recognition of Indian research: Naming the blood group after Bengaluru highlights India’s contributions to global immuno‑hematology.
The discovery of the CRIB blood group is a reminder that even well‑studied fields like blood typing continue to yield surprises and that investment in medical research can have life‑saving impacts.